[Big Vern]

Originally Posted by robo

I was having a read up on it as i am butchering ringgears for my flywheel and the general consensus is it needs to be machined from annealed en8. I dont know if thats right but they dont reckon to shave to much off a cast flywheel as it could exit through the bellhousing and give you a rapid pedicure . I will do a bit more research before i order the metal.

Some stuff i found


http://www.japspeed.co.uk/Honda-Civi...eel/p-5-1-792/


http://www.axidworks.com/Clutches%20...ed%20Flywheels

http://www.hondaperformanceparts.co....l_K_Seri es_/

bob

Lightening any cast flywheel is a dangerous business! if your fond of your legs I would NOT recomend it.
Minimum spec of annealed EN8 for lightweight flywheels, higher spec steel may lead to even lighter but the cost can be high (T4340 tends to be twice the price of EN8 as it's more difficult to machine)

Also important is the spec of the engine. No point if your not running lairy cams and high comp. ratio. - will just get tiring to drive and wear your starer motor out restarting after all those stalls!

BV